Electrical Engineering MCQs
Electrical Engineering MCQs for PPSC, FPSC, NTS, and competitive exams cover power systems, electronics, circuits, machines, and electromagnetism. Practice these questions to master concepts, improve time management, and excel in electrical engineering tests in Pakistan.
Q: Voltage across a short circuit is
A) Moderate
B) Very high
C) Cannot be determined
D) Zero
✅ Correct Answer: D
Explanation: A short circuit has negligible resistance, so voltage across it is zero.
Q: A parallel circuit has the same
A) Inductance in all wires
B) Current through each branch
C) Resistance across all components
D) Voltage across each branch
✅ Correct Answer: D
Explanation: In parallel circuits, voltage remains the same across all branches.
Q: Main function of an inverter is to
A) Control power factor
B) Convert AC to DC
C) Increase resistance
D) Convert DC to AC
✅ Correct Answer: D
Explanation: Inverters convert DC input to AC output.
Q: When two resistors are in series, their total resistance is
A) Equal to smallest
B) Greater than each
C) Zero
D) Less than each
✅ Correct Answer: B
Explanation: In series, resistances add up.
Q: Resonance in RLC circuit occurs when
A) XL < XC
B) XL > XC
C) XL = XC
D) R = L
✅ Correct Answer: C
Explanation: Resonance occurs when inductive and capacitive reactances are equal.